Improvement in hydraulic stop-valves



een sind anni effin.

Letters Patent No. 109,371, dated November 22,1870; antedated November 19, 1870.

CHARLES s. BA1LEY,'0`E MOBILE, ALABAMA.

IMPROVEMENT IN HYDRAULIC STOP-VALVES.

To all lwhom 'it may concern:

Beit known that I, CHARLES S. BAiLnr, of Mnbile, in the county of Mobile and State of Alabama, have invented Si 116W and uscful'mproveinont in Hydraulic Stop-Valves; and I do hereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in the art to make and use the same, reference heilig had to the accompanying drawing forming part ot' this specification, in which- Figure 1 is a top view ot" a valve-chest to whlch my improvement has been attached.

.Figure 2 is a detail sectional view ol' the same, taken throughthe line :c fr, tig. .`l.

My invention has for its object to furnish au iniprovement in the construction ot'hydranlic stop-valves,

especially of hydraulic presses, which will prevent the water, oil, or other liquid being used from flowing back from one press-cylinder or pipe when the pressure is being applied to another operated by the same pump or pumps; and

It consists in the construction and combination of various parts of the device, as hereinafter more fully described. f I

A is the valve-chest, through which from cud to end runs the main channel B, with both ends of which pumps are eounected.- i

C are vthe'veltical check-valves, which are placed .beve the channel B in the passage connecting the channel A with the channel D.

--The valves 'C are ground into their seats by means of a screw-driver placed ina slot in their upper ends, and should have a hole drilled and tapped in its upper ends for a rod to be screwed into hiedra-'wing out the said val-ves when desired.

The valves G are made in the ordinary manner; that is to say, round at the top and bottom, and triangular' in their middle parts.

n The check-valves passages are closed at their upper ends by screw-plugs, in the ordinary manner.

The channels D, leading from the check-,valves O, lead up into the open chambers E, from which channels Ii lead ont from the valve-chest Aand are connected at their outer ends with the pipes or other appliances running to the ram cylinders or other places where the pressure is required.

Gr are brass bushings, having screw-threads eut upontheir outer and inner surfaces, and`which are screwed into the valve-cliest'A above the open chambers v i The lower end v'of the chambers E have valve-seats H. formed in them to receive the beveled or conesliafted lower ends of the stop-valves I, the stems J of which have screw'throads cut upon them, and are screwed up through the bushings G.

, K are cylindrical washers, placed in the lower parts of the hole in which the bushingsG are placed..

The washers K, throughwhich the valve-stems J pass, should have a leather washer placed below and above them, and metal rings or washers L should be.

placed above the upper leather washer for the bushing Gr to act against when pressing the washers down to their places.

In the lower ends ot` the washers K are formed seats for Ithe upper bevel or cone-shaped ends of the valves I.

The part of the valve-stems J that enter the lower part of the washers K, are grooved or turned down, as shown in iig. 2, to form a space between the said stems and the inner surface of the said washers.

' The outer surface of the washers K has a ring groove or channel, K', formed around its middle part, which channel communicates with the space at the interior of said washers, by av hole through the body of the said washers, as shown in fig.- 2.

From the channels K' of the washers K, a channel, M, leads through thebody of the valve-chest A directly to the cistern.

To the upper ends of they valve-stems J are attached cranks or handles N, for convenience in operating the valves I.

By this construction, when the valves I are raised and the pumps are worked, the water, oil, or other liquid used will pass the check-valves C, and pass through the channel D, open chamber E and channel Il to the place where the pressure is applied, the check-valves C eiectually preventingits return.

When the valves I are lowered to their seats H,

the liquid will ow out through the washers K, channel K', and channel M, and thus back to the eistern.

By this construction the stop-valves I each act independently of the others, so that the liquid may be owing out ot' some of the presses while `the others are having pressure applied to them, or may be simply holding their pressure. y

Having thus described my invention,

' I claim as .new and desire to secure Patent- Theimproved valve-chest A, having main channel B, a series of channels, D E M, double valves I, nuts 7s 7c, screws J, and plugs G, al1 constructed and relatively arranged as and for the purpose described. y

A GHAS. S. BAILEY.

Witnesses L. F. IRWIN,

H. SMYTH.

by Letters 

